Band sawing-machine



(No Model.) 2 Sheets-Sheet 1. G. F. A. STEIN. BAND SAWING MACHINE.

No. 549,752. Patented Nov. 12, 1895;

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(No Model.) 2 Sheets-Sheet 2.

' G. P. A. STEIN BAND SA'WING MACHINE.

No. 549,752. Patented Nov. .12, 1895."

UNITED STATES CHARLES F. A. STEIN, OF FORT WAYNE, INDIANA.

BAND SAWlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 549,752, dated November12, 1895.

8 Application filed March 29, 1895. Serial No. 543,627. (No model.)

To all whom it may concern:

Be it known that 1, CHARLES F. A. STEIN, a citizen of the United States,residing at Fort Wayne, in the county of Allen, in the State of Indiana,have invented certain new and useful Improvements in BandSawing-Machines; and I do hereby declare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to improvements in band sawing-machines forresawing lumber.

The object of my invention is to provide an improved mechanism foradjusting and feeding the lumber to the saw in process of manufacture. Iattain this object by the mechanism illustrated in the accompanyingdrawings, in which V Figure 1 is a side elevation of the machine inposition and showing the general arrangement of its parts. Fig. 2 is acentral section of one of the band-wheels, showing the arrangement ofthe spokes and the manner of securing the same to the wheel. Fig. 3 is aplan view of the feed attachment. Fig. 4 is a detail view of the feedworm-wheels which operate the adjustable feed-rollers, showing themanner of mounting the same on the driving-shaft. Fig. 5 is an end viewof the wormwheel and the shaft shown in Fig. 4. Fig. 6 is a detail viewof the guide-block for retaining the lumber in proper position whilebeing manufactured. Fig. 7 is an end view of the resawing attachment.

Similar numerals refer to similar parts throughout the several views.

1 is the main stationary saw-frame; 2, the table upon which rests thefeed mechanism; 3, the rims of the band-saw wheels 4, metallic lugs forsecuring the outer ends of th spokes in the wheels to the rims.

' 5 are rivets or screws for fastening the lugs 4 to the rims.

6 are annular flanges on the terminal ends of the hub 7.

7 is the hub of the band-wheel.

8 are adjustable feed-rollers.

9 and 9 are slidable plates, upon which are mounted the feed-rollers 8and guide-rollers 25.

10 is a carriage-track for the plates 9 and 9,, and 11 the base-platesof the track'lO and integral with it.

12 is a driving-shaft having upon it the slidable worm-wheels 28 and 29.

13 is a bevel-wheel rigidly attached to the end of the shaft 12 andmeshing with the bevelwheel 14, which is rigidly attached to the end ofthe power-shaft 24.

15 is a band-pulley rigid on the shaft 24 for connection by adriving-belt 16 with the motive power.

17 is a spur -wheel mounted upon the shaft 20.

18 is a hand-crank removably secured upon the end of aneXternallyscrew-threaded round shaft 19.

20 is an externally-screw-threaded round shaft, upon which is mountedthe spurwheel 17 21 is a spur-wheel mounted upon the end of the shaft 19and meshing with the wheel 17. Both wheels 17 and 21 are secured totheir respective shafts by set-screws, as shown, which can be loosened,so that the wheels will rotate upon the shafts.

22 is abracket bolted to the end of 10 for supporting journals ofmeeting shafts 12 and 24.

24 is a driving-shaft for motive-power connection.

25 are vertical guide-rollers; 26, vertical extensions of plates 9 and9'.

27 are worm-wheels on lower ends of 8,adapted to engage with 28 and 29.

28 and 29 are worm-wheels slidably mounted upon the driving-shaft 12 andhaving internal lugs 34, adapted to slide in groove 33.

30 are brackets rigidly secured to plates 9 and 9 with perforated lugsloosely mounted upon the ends of the worm-wheels 28 and 29, as shown.

32 are removable collars mounted rigidly upon the collars of worm-wheels28 and 29 to secure 30 thereon against the collar 31, mounted upon saidworm-wheels.

33 is a longitudinal groove in shaft 12 for the lugs 34, as shown inFig. 5.

34 arerigid internal lugs upon the slidable worm-wheels 28 and 29.

2 549,75&

35 is a perforated lug rigidly secured to the slidable plate 9 andslidably mounted upon the shaft 20.

30 is an internally-threaded collar adapted to engage with thescrew-threzuled shaft and adjustable in slot 13 in plate 9.

37 is a coiled spring loosely mounted on 20 between and 36.

88 is a lug 011 3 J, slidable in slot 43.

39 is a washer for 38; 40, a screw securing 235 to 9; i], a bifurcatedbridge; 42, the bandsaw; 13, longitudinal slot in 9, and 4Ainternally-screw-threaded collar secured to plate 9 by bolt and mountedon screw-threaded shaft 19.

All parts of the machine are of metal, preferably iron and steel.

Both band-wheels are similarly constructed and maybe of any form adaptedto such use; but 1 preferably use those constructed as follows:

The lugs -l are rigidly secured by rivets or bolts upon the under sideof the rim 3 of the baud-wheel at proper intervals for the spokes. Eachlug has two screw-threaded perfo 'ations diametrically opposite andtransverse to the periphery of the wheel, adapted to receive the outerend of the spokes. The hub 7 is longer than the width of the rim of thewheel and has at its terminals annular flanges made integral with thehub or ridigdly secured thereto. These flanges have a series of radialscrew-threaded perforations for receiving the inner ends of the spokes.

The spokes are arranged in pairs and screwthreaded at the ends andadapted to screw into the hub and rim, thereby makinga wheel of greatsolidity. The insertion of the spokes in the terminal flanges of the hubgives them an extended base, and thereby strengthens the wheel againstlateral strains.

The plates 9 and 9 are mounted upon the carriage-track 10, so as toslide freely upon the same. The carriage-track, upon which the saidplates slide, has the outer edges dovetailed, as shown, an d the undersurfaces of the plates have corresponding dovetailed grooves adapted toreceive the dovetailed track, and the plates are secured from verticaland lateral displacement, and at the same time can be freely movedlongitudinally by rotating the shafts 19 and 20, as hereinafterdescribed.

The power applied by the driving-belt 16 to the shaft 2i is communicatedto shaft 12 by the gear-wheels 13 and 14, thereby causing the shaft 12to rotate, as clearly appears from the drawings. The shafts 19 and 20,geared by the spur-wheels 17 and 21, when rotated by turning thehand-crank 18 through their screw-threaded connections with thescrewthreaded collars 3G and at will move the slidable plates 9 and 9toward or from each other, according to the direction in which 18 isturned, and thereby diminish or increase the space, as may be desired,to adapt it to the dimensions of the stuif to be resawed.

The gear ends of the shafts 19 and 20 have suitable bearings for theirsupport in the transverse part of the carriage 10, as shown in Fig. Theworm-wheels 28 and 29, adapted to slide on the shaft 12, are secured toplates 9 and 9 by the perforated lugs of the brackets 30. These lugs areloosely mounted upon the collar ends of 28 and 29 and secured thereon bythe collars 32.

The internal lugs 34 are adapted to slidably move in the groove andsecure the worm-wheels from rotating upon. the shaft 12, and therebycausing them to rotate with the said shaft,

The brackets are bolted to plates 9 and 9, as shown. The verticalguide-rollcrs 8 and 25 on each plate 9 and 9 are jmirnaled at theirterminal ends into an extension of the said plates. At the lower end ofthe roller 8 is a worm-wheel rigidly secured to the roller and adaptedto engage with and be rotated by the worm-wheels 28 and 29.

The perforated lug 35, secured to plate 9, is

mounted loosely on the shaft 20, and the coiled spring 37, placed alsoloosely upon said shaft between 35 and the collar 36, by its pressureagainst 35 keeps the plate 9 forcibly pressed against the lumber to besawed, as hereinafter described. The bridge 41. is raised above theearriage-track and shafts 19 and 20 by the bent terminals, so as toclear the same, and is securely bolted. to the table by its ends, asshown in Fig. 7. The mode of operating the machine is as follows: Thesaw is mounted upon the bandwheels in the usual manner. The spur-wheel17 is released from gear with 21 by loosening the set-screw upon itsshaft 20, and by the hand-crank 18 the plate 9 is gaged with respect tothe band-saw to give the desired thickness of the lumber to be cut fromthe timber. The crank is then placed upon the terminal end of the shaft20 and the plate.9 adjusted so as to receive the timber to be sawedbetween the plates 9 and 9. The spurwheels 17 and 21 are then engaged byfastening the set-screws.

' If it is desired to simply split the lumber into two pieces of equalthickness, the plates should be adjusted equally distant from the saw,and then, with the two shafts 19 and 20 geared by fastening thespur-wheels, the space between the plates can be adjusted by turning thehand-erank on the shaft 19.

\Vhen the power is applied, the rotary motion of the shaft 12 causes theguide-rollers 8 to revolve, and the lumber being inserted between themis presented and fed to the saw and is kept in proper position by thevertical faces 26. The yielding of the plate 9 by the compression of thecoil-sprin g 37 will prevent fouling from inequality in the thickness ofthe lumber to be out.

lIavin g thus described the mechan ism what I claim as my invention, anddesire to secure by Letters Patent, is-

1. In a band sawing machine a feeding mechanism comprising the carriagebed 11 wheels 28 and 29 mounted thereon and having internal lugs 34adapted to fit in the groove 33 of said shaft 12, the brackets 30secured to the plates 9 and 9 and having perforated lugs mounted looselyon the collars of said worm wheels 28 and 29, the screw threaded shafts19 and 20, the spur wheels 17 and 18 to be secured by set screws to saidshafts and by which the same can be loosened upon said shafts atpleasure: the angled plates 9 and 9 having dovetailed grooves upon theunder surface adapted to slidably rest upon the dovetailed carriagetrack 10, the internal screw threaded collars 36 and 44 adapted toengage with the screw threaded shafts 19 and 20: the vertical feedrollers 8 having at their lower ends worm wheels 27 rigidly securedthereto and adapted to engage with the worm wheels 28 and 29: the lugand the coiled spring 37 mounted on the shaft 20, the slot 43, the guiderollers 25, the bifurcated bridge 41 all arranged substantially asdescribed and shown.

2. In a band saw machine, the combination of the stationary frame 1, thetable 2, the two saw band wheels 3, the carriage bed 11 having adovetailed carriage track, the

grooved driving shaft 12 with sliding worm wheels 28 and 29,havinginternal lugs adapted to engage the groove 33, the brackets 30having perforated lugs fitted loosely on collars of worm wheels 28 and29, the screw threaded shafts 19 and 20 gearedby the spur wheels 17 and21, and having set screws for loosening the spur wheels on the saidshafts, the angled plates 9 and 9 having dovetailed grooves upon theunder surface adapted to slidably rest in the dovetailed carriage track10; the internal screw threaded collars 36 and 44 adapted to engage withthe screw threaded shafts 19 and 20, the vertical feed rollers 8 havingthe worm wheels 27 rigidly secured thereto and adapted to engage withthe worms 28 and 29, the lug and the coiled spring 37 mounted on theshaft 20 between the lug 35 and the collar 36, the slot 43 in plate 9,the guide rollers 25, the bifurcated bridge 41 all arrangedsubstantially as described and shown.

Signedby me, at Fort Wayne, Allen county, State of Indiana, this 23d dayof-March, A. D. 1895.

CHARLES F. A. STEIN.

WVitnesses:

WALTER G. BURNs, CHAs. F. A. STEIN.

